FMMetaMetaModel initialization uses FM3

[sbragagnolo]

During the initialization of a FMMetaMetaModel we are executing an "updateCache" method that does as follow at the level of the FMMetaModel:
updateCache
nameDict := (FM3Constant constants collect: [ :const | const name asString -> const ]) asDictionary.
typeDict := (FM3Constant constants collect: [ :const | const class -> const ]) asDictionary.
self elements do: [ :each | self updateCacheWith: each ].

This couple the FM3 specific meta model to the metaMetaModel.